Duplicating machine



Feb. 9, 1926.

. l. scHr-:INKER I DUPLICATING MACHINE Filed March 6, 1925 Patented Feb.9, 1926. i

ILJA scmirnrmn,y lor tranne, AUSTRIA.

l enamorarme itmcrrrrra.

y=-Aplvilieation .led yMarch 6, 1925. Serial No. 13,506.v

:To kall whom it concern; 'Be '1t vknown that I, .ILJA 'SCHEINKER,

. imerchant, aV .citizenof the". Republic of 'Austria, `residing `atVienna, 'VIL ,Kandelgasse d Vslide 3 'wards by `means of a handle ./1.:The upper .railof the guides Z'is .provided Vupon its ain- `der face`vwith a rack into which engage 6., Austriafhave invented certain newanusetul .Improvements-1m Duplic-'ating Mavrchin-es, of whichVthe.following is aspeci- 'heat-ion.

' This. Ainventionxrelates to .rduplicating mathe matr.ixorstenci'lnftheinterior of'y the apparatus.

The known devices of: -this `kindr havel the disadvantage that .theinking roller. is formed .to ,act., aspa pressure roller .and operates.against a plate placed externally. yon. .the duplicating paper which.is; laid .on the l*matrix .orstencil y.This construction ,',does notensure the l., production of fully uni-torni `and perfect-duplications nl According totlfsinvention vthis .disadvantage .is eliminatedby ,thefact ,that above the sinking roller anadj ustable pressure roller is'provided'. to exert a regular `pressure Von t'he matrixcr-,stencilITlie colouring de-v ..X'1ice,f.arranged :underneath- .the matrix or Ystencil, and consisting yof .the .ink distribut aiing, rolle'riand theinking roller, is..advan Y :tageouslyf carried lin a slide. withL theypres- Y sure rollergsituated yabovethe Ymatrix or sten- :foil :andzntheiii-king roller.; thisslizde .can be Imoved backwards or forwards,whereby the ',1lateral-gui-deslo `thisv slide may. preferably be tomnedon v`the gear-rack system inorder =to rotate Vthe inking' roller ,andthus the whole rsingle ctilouring` device, ii-ts :backwardandutorward:movements.

#GW-ing `to the fact :that heiseparate presy drawing in which-' Fig. 1shows the duplicating machine in elevation, partly in section,

Fig. 21s a plan, Y,

Figs. 3 and 4 show side and front elevations p-artly in section of amodiied adjusting device for the pressure roller.

Vthe drawing.

the teeth vof .a gear .Whveelv 6 rotatably carried 'on the slide3, thisgear `wheel being rigidly connectedA withthe spindle? of theg-inkingVroller 8. Thei'nk squeezing and distribut- VsoA The' vpressure roller13 is borne inthe slot 12 of the slide 3 above the inlringroller 8 andjspressed upwardsby a springlll. Wforking againstfth'is spring inkingroller by means of the screws 15 the nut for which is Jformed intlieupper cross plat-elli'1 `of the slide 3. A piece of silk vgauze 17is stretched in a frame 16, between @distributing rollers Vis accessiblethek slide be-yV ing in the end position.` 'Inthisposition the inkcan bespread from laxztube or -'the vlike- 'nnthe rollerf).V Y

It, after 'raising the pressure vroller 13.

vby means of the handle 4, t-hefsli-de 3 is moved several times'ybackwards,V and forwards, therollers kof the single' colouring devicewill be rotated bythe rack 5 causing rthem tosqueeze 4the kink 'evenlyapplied to y'I5 the pressure roller can be pressed against the f theroller A9 andto spread 4it .on the roller 8. 'The machine is vnow readyfor lduplicatingy and the pressure'roller'13,*aliter adjusting iti bymeansot' the screws 15, can be applied to the stencil at'the'corr'ectpressure. The copies can now be produced by inserting the paper andoperating the slide. It the pressure adjustment betoo great or toolittle the correct pressure can easily be attained by looseningor-tightening the screws 15.

As above mentioned the roller v13 is adjusted by means ot the nuts andscrews 15 in the cross-plate 151 of the slide.v Il the roller 13 has:tor any reason to be raised, these must accordingly be screwed upwardsand be vagain adjusted to the matrix for a subsequent production ot'copies, when it may happen that this adjustment ot the two screws is notevenly done so that the writing or the like is not reproduced erenlj;yon the duplicates.

ln order to obviate this faulttlie adjustnient ot' the roller 13 iseliected as shown by Figs. 3 and #1.

The adjusting screws in this case pass looselyY through the. cross-plate151 ol the slide 23 and are supported at their lower ends by thesi'iiall bearing blocks 19 oil the roller 8. To the adjusting' screws 15a bracket Q0 is adjustably attached, which may advair tageonsly bepassed between guides 22 of the slide 3. Eccentric cani levers 23 act onthis bracket 20, being carried on a. shaft borne on the slide, whichshaft can be operated by a hand lever This passes outwardli7 through aslot Q5 in the cross-plate Al thus lixing the two limits ol the liandlever It' the latter be brought to its lowest position the cains 23press the bracket 9() and with it, by iiieans o'l.Z the screws 15, theroller 123 also, do vn ards against the matrix. @n raising the handlever 2a-L to the position indicated by dotted lines the roller and withit the bracket are raised upwards by the spring 1st.

When once the bracket T on the screws 15 is adjusted to the requiredpressure on the roller 13, this pressure remains unaltered atterlowering the hand lever it, even il the, rolle:I 13 be repeatedlyraised. There tore after the roller 13 has once been adjusted, eventhough it be raised repeatedly, clear and evenly inked copies willalways lie produced, in addition to which the loss ot" tiiiie whichwould otherwise be inevitable,

.owing to the necessity tor the readjustiiient oi' the screws 15 eachtime after the roller 'is raised, is obviated.

The present invention canalso be applied to rotary]v printing devices. p

Having now particularly described and ascertained the nature o'l' .mysaid invention :uid in what manner the saine to beperilornied, I declarethat what I claim is:

l. ln a duplicating ii'iacliine, the combination oit a :traine adaptedto sui'iport a matrix or stencil, inking mechanism including an`iiikingl roller rotatable below said nist-rift, a pressure roller abovethe matrix or stencil in vertical axial alincine'nt witlisaid inkiiigroller, and iiieaus for adjusting the pressure ot the pressure rolleragainst the iiikiiig roller. i

2. ln a duplicating machine, the combination of a lraiiie adapted tosupport a matrix or stencil, a horizontally reciprocable carringe,inking mechanism supported by said carriage, said inkiiig mechanismincluding a inli'ing roller rotatable in contact with the under tace `otsaid matrix or stencil, a pressure roller` supported by said carriageover the upper iace ot the matrix or stencil in vertical axialaliiienient with said iiikiiig roller, and means :tor adjusting thepressure of the pressure roller against the hiking roller. i

i. ln a duplicating machine, thecoinbination ot a Atraine adapted tosupport a matrix or stencil, a horizontally reciprooable earriage.hiking mechanism supported by said carriage, said inkiiig mechanismincludingT an inking roller rotatable iii Contact with the under 'faceot said matrix or stencil, a pressure roller supported by said carriageover the upper tace"ot`tlie matrix or stencil iii vertical axialaliiienient with said inking roller, a spring tending to raise saidpres- .sure roller troni the matrix or stencil, and

ineaiis :For pres-sing the pressure roller against the action olf thespring into adjusted pressing relation with the inking' roller.

fl. ln a duplicatingniachine, the combination ol a traine adapted tosupport a matrix or stencil, a horizontally reciprocable cai'- riage,inking mechanism supported bvsaid carriage below the matrix or stencil,said inkiug mechanism iiicliuling an inking roller in contact with the.under face of the matrix or stencil, a pressure roller supporti-idibysaid carriage above the matrix or stencil iii vertical axial aliiieinentwith `the iiikiiig roller, a spring tending to raise thepressure rollerironi the ii'iatrix or stencil, screws 'for adjustabliv pressing `thepressure i roller against the upper :tace ot" the matrix or stencil intopressing relatioi'i"witli the inking roller, a bracket throughi'vhielrsaid screws pass, and means for uniformly moving said ln'aeketand the said screws. i

In testimony wliereotI aiiix my signature.

ll'iJA SCHEINKER.

